2,4,6-三氯苯酚对污泥性能和菌群结构的影响  

Effects of 2,4,6-trichlorophenol on sludge performance and microbial community structure

作　　者：李玉 李刚强 徐永贵 赵建国 张珂 金宝丹 LI Yu;LI Gangqiang;XU Yonggui;ZHAO Jianguo;ZHANG Ke;JIN Baodan(Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,School of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China;Zhengzhou Airport Harbour Minggang Water Service Co.Ltd.,Zhengzhou 450001,China;Henan International Science and Technology Exchange Center,Zhengzhou 450001,China)

机构地区：[1]郑州轻工业大学材料与化学工程学院环境污染治理与生态修复河南省协同创新中心,河南郑州450001 [2]郑州航空港区明港水务有限公司,河南郑州450001 [3]河南省对外科技交流中心,河南郑州450001

出　　处：《化工环保》2021年第4期434-439,共6页Environmental Protection of Chemical Industry

基　　金：河南省科技攻关项目(212102310516);国家自然科学基金项目(42007340)。

摘　　要：采用序批式生物反应器(SBR)处理2,4,6-三氯苯酚(2,4,6-TCP)模拟废水,考察了2,4,6-TCP对污泥性能和菌群结构的影响。实验结果表明:进水质量浓度为10 mg/L的2,4,6-TCP显著抑制污泥活性;随着运行时间的延长,污泥活性逐渐恢复,COD和2,4,6-TCP均可被有效降解;活性污泥中的微生物分泌了大量的胞外聚合物。污泥中过氧化氢酶(CAT)和脱氢酶(DHA)活性显著升高,超氧化物歧化酶(SOD)活性在单个SBR周期的6.00 h达到最大值,而后随着有毒物质的降解,SOD活性降低。当SBR运行结束后,污泥中富集的优势菌属大都具有降解氯酚类污染物的能力。The simulated wastewater containing 2,4,6-trichlorophenol(2,4,6-TCP)was treated using a sequencing batch bioreactor(SBR),and its effect on sludge performance and microbial community structure was investigated.The experimental results show that:The sludge activity is significantly inhibited by influent 2,4,6-TCP with10 mg/L of mass concentration;With the extension of running time,the sludge activity is gradually recovered and COD and 2,4,6-TCP are effectively degraded;the microbes in activated sludge secrete a lot of extracellular polymers.The activity of catalase(CAT)and dehydrogenase(DHA)in sludge significantly increases,while the activity of superoxide dismutase(SOD)reaches to the maximal value at the 6.00 h in single SBR cycleand thendecreases with the degradation of toxic substances.After the end of SBR operation,most of the dominant bacteria accumulated in sludge have the ability to degrade chlorophenol pollutants.

关 键 词：2 4 6-三氯苯酚 序批式生物反应器 污泥性能 菌群结构 过氧化氢酶 脱氢酶 超氧化物歧化酶 

分 类 号：X703[环境科学与工程—环境工程]